为甚麼生物需要氧气来生存 用英文回答

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In fact, not all the cells need oxygen to survive, but every cell indeed needs ATP as their direct energy supply. The cells use oxygen to burn the "fuel" just like a car's engine.

The cellular respiration harvests chemical energy from food and converts it to ATP in the Mitochondria. The overall equation for cellular respiration is that C6H12O6 + 6O2——>6CO2+6H2O+ATP

This arrow indicates that cellular respiration consists of many chemical steps, not just a single chemical reaction. Remember, the main function of cellular respiration is to generate ATP for cellular work.

When you inhale, you breathe in oxygen, which diffuses across the lining of your lungs and into your bloodstream. Oxygen is delivered to your cells, where it is used in cellular respiration. Carbon dioxide, a waste product of cellular respiratioin, diffuses from your cells to your blood and travels to your lungs. CO2 diffuses across the lining of you